diff options
Diffstat (limited to 'docs/api/modules/nixio.File.html')
| -rw-r--r-- | docs/api/modules/nixio.File.html | 669 |
1 files changed, 669 insertions, 0 deletions
diff --git a/docs/api/modules/nixio.File.html b/docs/api/modules/nixio.File.html new file mode 100644 index 0000000000..7a7500a773 --- /dev/null +++ b/docs/api/modules/nixio.File.html @@ -0,0 +1,669 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" + "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> +<html> +<head> + <title>Reference</title> + <link rel="stylesheet" href="../luadoc.css" type="text/css" /> + <!--meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/--> +</head> + +<body> +<div id="container"> + +<div id="product"> + <div id="product_logo"></div> + <div id="product_name"><big><b></b></big></div> + <div id="product_description"></div> +</div> <!-- id="product" --> + +<div id="main"> + +<div id="navigation"> + + +<h1>LuaDoc</h1> +<ul> + + <li><a href="../index.html">Index</a></li> + +</ul> + + +<!-- Module list --> + +<h1>Modules</h1> +<ul> + + <li> + <a href="../modules/luci.dispatcher.html">luci.dispatcher</a> + </li> + + <li> + <a href="../modules/luci.http.html">luci.http</a> + </li> + + <li> + <a href="../modules/luci.http.conditionals.html">luci.http.conditionals</a> + </li> + + <li> + <a href="../modules/luci.http.date.html">luci.http.date</a> + </li> + + <li> + <a href="../modules/luci.http.mime.html">luci.http.mime</a> + </li> + + <li> + <a href="../modules/luci.i18n.html">luci.i18n</a> + </li> + + <li> + <a href="../modules/luci.ip.html">luci.ip</a> + </li> + + <li> + <a href="../modules/luci.ip.cidr.html">luci.ip.cidr</a> + </li> + + <li> + <a href="../modules/luci.json.html">luci.json</a> + </li> + + <li> + <a href="../modules/luci.jsonc.html">luci.jsonc</a> + </li> + + <li> + <a href="../modules/luci.jsonc.parser.html">luci.jsonc.parser</a> + </li> + + <li> + <a href="../modules/luci.model.ipkg.html">luci.model.ipkg</a> + </li> + + <li> + <a href="../modules/luci.model.uci.html">luci.model.uci</a> + </li> + + <li> + <a href="../modules/luci.rpcc.html">luci.rpcc</a> + </li> + + <li> + <a href="../modules/luci.rpcc.ruci.html">luci.rpcc.ruci</a> + </li> + + <li> + <a href="../modules/luci.sys.html">luci.sys</a> + </li> + + <li> + <a href="../modules/luci.sys.init.html">luci.sys.init</a> + </li> + + <li> + <a href="../modules/luci.sys.iptparser.html">luci.sys.iptparser</a> + </li> + + <li> + <a href="../modules/luci.sys.net.html">luci.sys.net</a> + </li> + + <li> + <a href="../modules/luci.sys.process.html">luci.sys.process</a> + </li> + + <li> + <a href="../modules/luci.sys.user.html">luci.sys.user</a> + </li> + + <li> + <a href="../modules/luci.sys.wifi.html">luci.sys.wifi</a> + </li> + + <li> + <a href="../modules/luci.util.html">luci.util</a> + </li> + + <li> + <a href="../modules/nixio.html">nixio</a> + </li> + + <li> + <a href="../modules/nixio.CHANGELOG.html">nixio.CHANGELOG</a> + </li> + + <li> + <a href="../modules/nixio.CryptoHash.html">nixio.CryptoHash</a> + </li> + + <li><strong>nixio.File</strong></li> + + <li> + <a href="../modules/nixio.README.html">nixio.README</a> + </li> + + <li> + <a href="../modules/nixio.Socket.html">nixio.Socket</a> + </li> + + <li> + <a href="../modules/nixio.TLSContext.html">nixio.TLSContext</a> + </li> + + <li> + <a href="../modules/nixio.TLSSocket.html">nixio.TLSSocket</a> + </li> + + <li> + <a href="../modules/nixio.UnifiedIO.html">nixio.UnifiedIO</a> + </li> + + <li> + <a href="../modules/nixio.bin.html">nixio.bin</a> + </li> + + <li> + <a href="../modules/nixio.bit.html">nixio.bit</a> + </li> + + <li> + <a href="../modules/nixio.crypto.html">nixio.crypto</a> + </li> + + <li> + <a href="../modules/nixio.fs.html">nixio.fs</a> + </li> + +</ul> + + + +<!-- File list --> + + + + + + + +</div><!-- id="navigation" --> + +<div id="content"> + +<h1>Object Instance <code>nixio.File</code></h1> + +<p> + Large File Object. + Large file operations are supported up to 52 bits if the Lua number type is + double (default).</p> + + + + + + + +<h2>Functions</h2> +<table class="function_list"> + + <tr> + <td class="name" nowrap><a href="#File.close">File:close</a> ()</td> + <td class="summary"> + Close the file descriptor.</td> + </tr> + + <tr> + <td class="name" nowrap><a href="#File.fileno">File:fileno</a> ()</td> + <td class="summary"> + Get the number of the filedescriptor.</td> + </tr> + + <tr> + <td class="name" nowrap><a href="#File.lock">File:lock</a> (command, length)</td> + <td class="summary"> + Apply or test a lock on the file.</td> + </tr> + + <tr> + <td class="name" nowrap><a href="#File.read">File:read</a> (length)</td> + <td class="summary"> + Read from a file descriptor.</td> + </tr> + + <tr> + <td class="name" nowrap><a href="#File.seek">File:seek</a> (offset, whence)</td> + <td class="summary"> + Reposition read / write offset of the file descriptor.</td> + </tr> + + <tr> + <td class="name" nowrap><a href="#File.setblocking">File:setblocking</a> (blocking)</td> + <td class="summary"> + (POSIX) Set the blocking mode of the file descriptor.</td> + </tr> + + <tr> + <td class="name" nowrap><a href="#File.stat">File:stat</a> (field)</td> + <td class="summary"> + Get file status and attributes.</td> + </tr> + + <tr> + <td class="name" nowrap><a href="#File.sync">File:sync</a> (data_only)</td> + <td class="summary"> + Synchronizes the file with the storage device.</td> + </tr> + + <tr> + <td class="name" nowrap><a href="#File.tell">File:tell</a> ()</td> + <td class="summary"> + Return the current read / write offset of the file descriptor.</td> + </tr> + + <tr> + <td class="name" nowrap><a href="#File.write">File:write</a> (buffer, offset, length)</td> + <td class="summary"> + Write to the file descriptor.</td> + </tr> + +</table> + + + + + + +<br/> +<br/> + + +<h2><a name="functions"></a>Functions</h2> +<dl class="function"> + + + +<dt><a name="File.close"></a><strong>File:close</strong> ()</dt> +<dd> + + Close the file descriptor. + + + + + + + +<h3>Return value:</h3> +true + + + +</dd> + + + + +<dt><a name="File.fileno"></a><strong>File:fileno</strong> ()</dt> +<dd> + + Get the number of the filedescriptor. + + + + + + + +<h3>Return value:</h3> +file descriptor number + + + +</dd> + + + + +<dt><a name="File.lock"></a><strong>File:lock</strong> (command, length)</dt> +<dd> + + Apply or test a lock on the file. + + +<h3>Parameters</h3> +<ul> + + <li> + command: Locking Command ["lock", "tlock", "ulock", "test"] + </li> + + <li> + length: Amount of Bytes to lock from current offset (optional) + </li> + +</ul> + + + + +<h3>Usage</h3> +<ul> + + <li>This function calls lockf() on POSIX and _locking() on Windows. + + <li>The "lock" command is blocking, "tlock" is non-blocking, + "ulock" unlocks and "test" only tests for the lock. + + <li>The "test" command is not available on Windows. + + <li>Locks are by default advisory on POSIX, but mandatory on Windows. + +</ul> + + + +<h3>Return value:</h3> +true + + + +</dd> + + + + +<dt><a name="File.read"></a><strong>File:read</strong> (length)</dt> +<dd> + + Read from a file descriptor. + + +<h3>Parameters</h3> +<ul> + + <li> + length: Amount of data to read (in Bytes). + </li> + +</ul> + + + + +<h3>Usage</h3> +<ul> + + <li><strong>Warning:</strong> It is not guaranteed that all requested data + is read at once especially when dealing with pipes. + You have to check the return value - the length of the buffer actually read - + or use the safe IO functions in the high-level IO utility module. + + <li>The length of the return buffer is limited by the (compile time) + nixio buffersize which is <em>nixio.const.buffersize</em> (8192 by default). + Any read request greater than that will be safely truncated to this value. + +</ul> + + + +<h3>Return value:</h3> +buffer containing data successfully read + + + +</dd> + + + + +<dt><a name="File.seek"></a><strong>File:seek</strong> (offset, whence)</dt> +<dd> + + Reposition read / write offset of the file descriptor. + The seek will be done either from the beginning of the file or relative + to the current position or relative to the end. + + +<h3>Parameters</h3> +<ul> + + <li> + offset: File Offset + </li> + + <li> + whence: Starting point [<strong>"set"</strong>, "cur", "end"] + </li> + +</ul> + + + + +<h3>Usage:</h3> +This function calls lseek(). + + + +<h3>Return value:</h3> +new (absolute) offset position + + + +</dd> + + + + +<dt><a name="File.setblocking"></a><strong>File:setblocking</strong> (blocking)</dt> +<dd> + + (POSIX) Set the blocking mode of the file descriptor. + + +<h3>Parameters</h3> +<ul> + + <li> + blocking: (boolean) + </li> + +</ul> + + + + + + +<h3>Return value:</h3> +true + + + +</dd> + + + + +<dt><a name="File.stat"></a><strong>File:stat</strong> (field)</dt> +<dd> + + Get file status and attributes. + + +<h3>Parameters</h3> +<ul> + + <li> + field: Only return a specific field, not the whole table (optional) + </li> + +</ul> + + + + +<h3>Usage:</h3> +This function calls fstat(). + + + +<h3>Return value:</h3> +Table containing: <ul> + <li>atime = Last access timestamp</li> + <li>blksize = Blocksize (POSIX only)</li> + <li>blocks = Blocks used (POSIX only)</li> + <li>ctime = Creation timestamp</li> + <li>dev = Device ID</li> + <li>gid = Group ID</li> + <li>ino = Inode</li> + <li>modedec = Mode converted into a decimal number</li> + <li>modestr = Mode as string as returned by <code>ls -l</code></li> + <li>mtime = Last modification timestamp</li> + <li>nlink = Number of links</li> + <li>rdev = Device ID (if special file)</li> + <li>size = Size in bytes</li> + <li>type = ["reg", "dir", "chr", "blk", "fifo", "lnk", "sock"]</li> + <li>uid = User ID</li> + </ul> + + + +</dd> + + + + +<dt><a name="File.sync"></a><strong>File:sync</strong> (data_only)</dt> +<dd> + + Synchronizes the file with the storage device. + Returns when the file is successfully written to the disk. + + +<h3>Parameters</h3> +<ul> + + <li> + data_only: Do not synchronize the metadata. (optional, boolean) + </li> + +</ul> + + + + +<h3>Usage</h3> +<ul> + + <li>This function calls fsync() when data_only equals false + otherwise fdatasync(), on Windows _commit() is used instead. + + <li>fdatasync() is only supported by Linux and Solaris. For other systems + the <em>data_only</em> parameter is ignored and fsync() is always called. + +</ul> + + + +<h3>Return value:</h3> +true + + + +</dd> + + + + +<dt><a name="File.tell"></a><strong>File:tell</strong> ()</dt> +<dd> + + Return the current read / write offset of the file descriptor. + + + + + +<h3>Usage:</h3> +This function calls lseek() with offset 0 from the current position. + + + +<h3>Return value:</h3> +offset position + + + +</dd> + + + + +<dt><a name="File.write"></a><strong>File:write</strong> (buffer, offset, length)</dt> +<dd> + + Write to the file descriptor. + + +<h3>Parameters</h3> +<ul> + + <li> + buffer: Buffer holding the data to be written. + </li> + + <li> + offset: Offset to start reading the buffer from. (optional) + </li> + + <li> + length: Length of chunk to read from the buffer. (optional) + </li> + +</ul> + + + + +<h3>Usage</h3> +<ul> + + <li><strong>Warning:</strong> It is not guaranteed that all data + in the buffer is written at once especially when dealing with pipes. + You have to check the return value - the number of bytes actually written - + or use the safe IO functions in the high-level IO utility module. + + <li>Unlike standard Lua indexing the lowest offset and default is 0. + +</ul> + + + +<h3>Return value:</h3> +number of bytes written + + + +</dd> + + +</dl> + + + + + +</div> <!-- id="content" --> + +</div> <!-- id="main" --> + +<div id="about"> + <p><a href="http://validator.w3.org/check?uri=referer"><img src="http://www.w3.org/Icons/valid-xhtml10" alt="Valid XHTML 1.0!" height="31" width="88" /></a></p> +</div> <!-- id="about" --> + +</div> <!-- id="container" --> +</body> +</html> |